Loom shuttle swell



u 24, 1948. s. MA RO 2,447,761

LOOM SHUTTLE SWELL Filed Jan. 3, 1946 2 Sheets-Sheet 1 mil/26% I F tilcavzaljr rllfllrlhrlllm" Aug. 24, 1948. s. MACRO LOOM SHUTTLE SWELL 2 Sheets-Sheet; 2

Filed Jan. 3, 1946 \R w \\\mh k Patented Aug. 24, 1948 UNITED STATES orm c-E LOOM SHUTTLE "SWELL Samuel Macro, Colnc, England Application January 3, 1946, Serial No. 638,166 In Great Britain January-'10, 1945 7 Claims. 1

This invention relates to a 'loom' shuttle swell its object being to introduce a swell'which will give an improved shuttle-control (a) by putting the greatest braking pressure on the shuttle as it enters the box and :relievingtho pro'ssureas the shuttle leaves the box (1)) bybringing the'shuttle to rest in apos'ition' in which by previous adjustment of the swell parts the shuttle isin accurate alignment with the'course it should follow when picked out of the box.

According to this invention the swell or a holdor to'which the swell is attached is pivotally connected by links to a support so that it has -aparal-lel or substantially paralielmovementin relation to the position in which-it has been set. i

The pivots which connect the links to the swell are situated in relation to the incoming shuttle in advance of the pivots which connect the links to the support so that-when the swell is forced backby the incoming shuttle it moves in a direca tion towards the latter thereby increasing the braking pressure that the swell exerts on theshuttie, and when the shuttle is leaving the boxthe swell is free to move in the same direction as'tho outgoing shuttle thereby relieving the pressure exerted by the swell on the shuttle sopermitting an easy but controlled movement of the outgoing shuttle. The swell is adjustable towards and away from the box back and in an angular directionto any required degreeso that it can not only be set more or less parallel with theboxback-or at an angle in relation thereto but also adjusted to protrude more or less into the box; This arrangement enables the box front to be set approximately parallel with the box back or with the front of the swell in the-event of'the-latter'being set out of line with the box backso that "when the shuttle is picked out of the box it will 'commence its flight truly in line with the reed and make a correct flight as it is picked from one box to the other instead oftravelling more or less ina zig zag fashion due to the shuttle pointing slightly away from the box back when it 'leaves'thebox as is the case when the box front is set at a slight angle to the box back according to the usual practice. After the swell hasbeen adjusted and fixed in the desired position all the vertical planes through which the face of the swell moves are parallel or substantially parallel to-one another.

Theswol'l and its attendant parts can be applied to any type of loom in which a loom shuttle swell is usodsuch for example as a single box loom, a

ill

In the accompanying drawings:

Fig. '1 is a plan of :a swell unit for use on a right-hand shuttle'box of a loose reed loom.

"Fig.2is a view of the back of the unit, in the position-seen when facing Figu-re 1 and looking down from above, with the spring and its holder removed.

Fig. 3 is a section taken on line -3--3 of Fig.1.

Fig. 4 is a plan of a swelland its-attendant parts-for use on a, left hand shuttle box of afast reed loom'and Fig.5 is similar viewto Fig.4 showing a modification.

Inthe example shown inFigs. 1 to 3 the swel A is fixed by screws a, Fig.2, only one of which is visible to a holdor A The latter is formed with lugs A to receive the endsof two links, B, B which are attached to the lugs by pivots C. The links B, B are pivoted on studs D that pass through slots E in a bracket E that is provided with lugs E- for attachment to the box back F The studs "D can be moved along the slots E and fixed in any adjusted position by nuts D The pivots C are situated in advance of the studs D to cause the swell to function in the manner previously described.

The swell passes through an opening F in the back F of the box and is maintained in its working position against an adjustable stop by one ormore springs. In the example shown one end of a curvedleaf spring G bears on the back of the swell holder A and the other end of such spring is attached to a holder G that is slidably mounted in a rocess E in the-bracket E and can be moved towards and away from the shuttle box back and be secured in its adjusted position by a screw (3 The adjustable stop may consist of an adjusting screw'H that is screwed into'a tapped hole formed inraportion of the bracket E in such a position that it will bear against a tail piece or abutment B on the link 13 a lock nut H being provided forfixing the screw H in its adjusted position. with this arrangement when the screw is tightened it reducesthe protrusion of the swell into the box, and when the screw is slackenod the spring causes the swell to protrude further into thebox. The adjustment of the screw'also variesthe'angle of the two links in relation to the sweil withtheresult that the pressure that the swell exerts on theshuttle is increased or diminished;

"The swellmay consistof a block of wood, fibre, or "other suitable material which may be covered onthe workingfaco with a lining A of leather 0 oth'ensui-tablecushion-ingmaterial. r

In the construction shewn the effective length of the links B, B is the same so that the swell moves with a parallel motion in relation to the centres of the studs D. The efiective length of the links may however be approximately equal so that the swell would move with a substantially parallel motion in relation to the centres of the studs D. If the effective length of the links is not equal, the studs D may be so situated that the swell moves with a substantially parallel motion in relation to the position to which it has been set.

In the construction shewn in Fig. 4 which shew's one form of the invention for application to a fast reed loom the parts are substantially the same as the ones previously described but in order to acshuttle enters the box a lever K is provided which passes between the stop finger J and the bracket T E or back F of the shuttle box.

In the example shewn in Fig. 4 the lever is pivotedon the stud D on which the link B is pivoted and suchlink is formed with an extension B to which the lever is fixed by 'a bolt L passing through a hole in one part and a slot L in the other part, or through a slot in each part. Any other arrangement may be provided which would enable thelever K to be moved angularly and secured in any adjustedposition.

The lever may be formed with longitudinal slots for the passage of the stud and the bolt or bolts which attach it to the link to provide longitudinal adjustment of the lever.

The adjustment of the lever is independent of the adjustment of the swell thereby enabling the swell setting to be done first and the lever adjustment afterwards.

Instead of the link and lever being made in separate parts they may be made in one piece.

The lever secured to the-link or link extension may also be mounted on a-separate pivot.

In the application of the invention to a fast reed loom it is optional to lit a spring or springs.

In the preferred construction shewn in Fig. 5*a*lever K is operated directly b the swell, or swell carrier and in the example shewn it is provided with a downwardly extending roller K mounted on a stud K that is adjustable in a slot K in the lever and can be moved towards or away from the swell holder A and fixed in any adjusted position. pivoted on the stud D which carries the link B but it may be mounted on an independent pivot which may be adjustable. The roller may alternatively be mounted on a stud that is adjustable in a slot in an abutment on the swell or swell carrier.

In this arrangement the links B, B are quite free to turn and are not subjected to a load as is the link B in Fig. 4.

The lever may be operated directly by a portion of one of the links, or by the swell and link combined and it may be mounted on the link or link stud, or be separately mounted on an independent pivot which may be adjustable.

When the lever is operated directly by the swell and link combined it may be mounted on a fixed adjustable pivot in thelink extension. The link extension may be formed with a transverse slot to permit adjustment and the lever is formed with a transverse slot to permit free movement of the lever upon the stud on which the link is pivoted. A portion of the lever and/or swell carrier is formed with an abutment so that contact is made, between the swell and the lever..

The lever K is shewn.

With this arrangement when the swell is moved back the lever is turned both by the movement of the extended link on which the lever pivots and also by contact with the swell carrier with the result that a greater movement of the lever can be obtained from a given movement of the swell than can be obtained from the movement of the extended link alone.

Contact may similarly or additionally be made between any portion of a link and the lever.

of mountin them would be made when necessary' to adapt them to their new surroundings.

The details of construction can be variously box back; an adjustable stop cooperating withone of said links and capable of imparting a turning movement to said link during adjustment of said stop; and spring means permanently tending to turn said links against the direction of the turning movement imparted by said ad-.

justable stop and pressing said links against the same.

2. A- loom shuttle swell unit comprising in combination a stationary support adapted to be mounted on a shuttle box back; a loom shuttle swell; links attaching said loom shuttle swell to said stationary support turnably from an initial position in such a manner as to permit parallel displacement of said loom shuttle swell relative to said stationary support and said shuttle box back; an abutment on one of said links; and an adjustable screw stop mounted on said stationary support and arranged so as to press against said abutment of said link.

3. A loom shuttle swell unit comprising in combination a stationary support; a loom shuttle swell; links pivotally attaching said loom shuttle swell to said stationary support in such a manner as to permit said loom shuttle swell to move substantially parallel in relation to the position in which it has been set; and a lever actuated by the movement of said loom shuttle swell for imparting movement to the stop rod finger of a fast reed loom.

4. A loom shuttle swell unit comprising in combination a stationary support; a loom shuttle swell; links pivotally attaching said loom shuttle swell to said stationary support in such a manner as to permit said loom shuttle swell to move substantially parallel in relation to the position in which it has been set; and a lever actuated indirectly by said loom shuttle swell for imparting movement to the stop rod finger of a fast reed loom.

5. A loom shuttle swell unit comprising in combination a stationary support; a loom shuttle swell; links pivotally attaching said loom shuttle swell to said stationary support in such a manner as to permit said loom shuttle swell to move substantially parallel in relation to the position in which it has been set; a lever; and a roller mounted on said lever and actuated by said loom shuttle swell for imparting movement to the stop rod finger of a fast reed loom.

6. A loom shuttle swell unit comprising in combination a stationary support; a 100m shuttle swell; links pivotally attaching said loom shuttle swell to said stationary support in such a manner as to permit said loom shuttle swell to move substantially parallel in relation to the position in which it has been set; a lever pivoted on one of the pivots of said loom shuttle swell; and a roller carried by said lever and actuated by said loom shuttle swell so as to move said lever to actuate the stop rod finger of a fast reed loom.

7. A loom shuttle swell unit comprising in combination a stationary support; a loom shuttle swell; links pivotally attaching said loom shuttle swell to said stationary support in such a manner as to permit said loom shuttle swell to move substantially parallel in relation to the position in which it has been set; a lever; a roller actu ated by said loom shuttle swell and operating said lever so as to move the stop rod finger of a fast reed loom; and means for adjusting the position of said roller.

SAMUEL MACRO.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,068,823 Ryon July 29, 1913 1,506,914 Mathieson Sept. 2, 1924 2,341,843 Hamilton Feb. 15, 1944 2,399,763 Santon May '7, 1946 FOREIGN PATENTS Number Country Date Great Britain 1909 

